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Secure Wireless multicasting through Nakagami-m Fading Channels with multi-hop relaying

Journal of Computer and Communications 2023年第5期11卷 177-193页

作者： Md. Mizanur Rahman Md. Zahurul Islam Sarkar Mohammad Mahmud Hasan Department of Electrical and Electronic Engineering RUET Rajshahi Bangladesh

The additional diversity gain provided by the relays improves the secrecy capacity of communications system significantly. The multiple hops in the relaying system is an important technique to improve this diversity gain. The development of an analytical mathematical model of ensuring security in multicasting through fading channels incorporating this benefit of multi-hop relaying is still an open problem. Motivated by this issue, this paper considers a secure wireless multicasting scenario employing multi-hop relaying technique over frequency selective Nakagami-m fading channel and develops an analytical mathematical model to ensure the security against multiple eavesdroppers. This mathematical model has been developed based on the closed-form analytical expressions of the probability of non-zero secrecy multicast capacity (PNSMC) and the secure outage probability for multicasting (SOPM) to ensure the security in the presence of multiple eavesdroppers. Moreover, the effects of the fading parameter of multicast channel, the number of hops and eavesdropper are investigated. The results show that the security in multicasting through Nakagami-m fading channel with multi-hop relaying system is more sensitive to the number of hops and eavesdroppers. The fading of multicast channel helps to improve the secrecy multicast capacity and is not the enemy of security in multicasting.

关键词： Frequency Selective Fading multi-hop relaying Probability of Non-Zero Secrecy multicast Capacity Secure Outage Probability for multicasting

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Linear beamformer schemes with simple relay selection in MIMO relay networks

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The Journal of China Universities of Posts and Telecommunications 2008年第4期15卷 24-29+39页

作者： MENG Qing-min 1,2, PAN Su1, ZHENG Bao-yu1, ZHU Hong-bo1, YOU Xiao-hu2 1. Jiangsu Key Laboratory of Wireless Communications and Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China 2. National Mobile Communications Research Lab, Southeast University, Nanjing 210096, China Jiangsu Key Laboratory of Wireless Communications and Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications Nanjing 210003 China National Mobile Communications Research Lab Southeast University Nanjing 210096 China

This article considers a wireless multi-hop/mesh network where single multi-antenna source-destination pair communicates through a selected relay subset using simple relay selection under the constraint of fixed relay’s number. Compared with random selection, the simple relay selection can yield certain capacity advantages while linear zero-forcing (ZF) receiver and linear beamformer are considered at the relay. For match-filter (MF) beamformer and amplified-and-forward (AF) beamformer with a fixed number of relays, the capacities are given. Furthermore, we extend the simple selection methods to the relaying scheme with orthogonal-triangular (QR) beamformer and investigate these linear beamformer schemes over spatially correlated multi-input multi-output (MIMO) links for both the backward and forward channel over the two-hop MIMO relay networks.

关键词： wireless mesh networks multi-hop relaying capacity beamformer

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EA-RDSP: Energy Aware Rapidly Deployable Wireless Ad hoc System for Post Disaster Management

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Computers, Materials & Continua 2021年第11期69卷 1725-1746页

作者： Ajmal Khan Mubashir Mukhtar Farman Ullah Muhammad Bilal Kyung-Sup Kwak Department of Electrical and Computer Engineering COMSATS University IslamabadAttock43600Pakistan Division of Computer and Electronics Systems Engineering Hankuk University of Foreign StudiesYongin-si17035Korea Department of Information and Communication Engineering Inha UniversityIncheon22212Korea

In post disaster scenarios such as war zones floods and earthquakes,the cellular communication infrastructure can be lost or severely *** such emergency situations,remaining in contact with other rescue response teams in order to provide inputs for both headquarters and disaster survivors becomes very ***,in this research work,a design,implementation and evaluation of energy aware rapidly deployable system named EA-RDSP is *** proposed research work assists the early rescue workers and victims to transmit their location information towards the remotely located *** EA-RDSP,two algorithms are proposed i.e.,hop count Assignment(HCA)algorithm and Maximum Neighbor Selection(MNS)*** EA-RDSP contains three types of nodes;the client node sends information about casualty in the disaster area to the server,the relay nodes transmit this information from client node to server nodes via multi-hop transmission,the server node receives messages sent by client node to alert rescue *** EAM-RDSP contains three types of nodes;the client node sends information about casualty in the disaster area to the server,the relay nodes transmit this information from client node to server nodes via multi-hop transmission,the server node receives messages sent by client node to alert rescue *** proposed EA-RDSP scheme is simulated using NS2 simulator and its performance is compared with existing scheme in terms of end-to-end delay,message delivery ratio,network overhead and energy consumption.

关键词： Disaster management neighbor selection device-to-device communication multi-hop relaying energy efficiency

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